Valve spacer for pump rods



Feb. 23, 1943. co s I 2,311,816

4 VALVE SPACER FOR PUMP RODS Filed J'Llfie 27, 1941 3 Sheets-Sheet 1 A? l s I z! I Inventor Janzea 22. lailz'na' Attorney Feb. 23, 1943. J, R, ums 2,311,816

VALVE SPACER FOR PUMP RODS Filed June 27, 1941 3 Sheets-Sheet 2 1 1 1 i r" *i l' T" 'i '1 1 I Z 7 l4 1 I 7 1 i a 16 w J j Inventor -Z'/ k fingeSEWZME s Feb. 23, 1943. J R, O N 2,311,816 v-ALvE SPACER FOR PUMP nous I Filed June 27, 1941 s Sheets-Sheet s Inventor wmwwfl 66221225 A ltarny I Patented Feb. 23, 1943 UNITED STATES PATENT ors cs VALVE SPACER FOR PUMP RODS James It. Collins, Grand Rapids, Mich; Application June27, 1941, Serial No. 400,135

2 Claims. (01. 24-243) This invention relates to a valve. spacer for pump rods, the general object of the invention being to provide means whereby the polish rod can be adjusted so that the valves will bump to jar loose any foreign matter collecting on the valves or adjacent thereto, so that the valves will operate and without shutting down the well or loosening any bolts and also to provide means for holding a ratchet wrench against backlash when removing a rod section from another section.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is an elevational view showing the invention applied to the polish rod.

Figure 2 is a longitudinal sectional view through Figure 1.

Figure 3 is a transverse sectional view taken substantially on the line 33 of Figure 1 and drawn to an enlarged scale and showing how a bar is connected with a clamp.

Figure 4 is a section on the line 4-4 of Figure 1.

Figure 5 is a top plan view of the lower member with parts in section.

Figure 6 is a vertical sectional view through part of the ratchet wrench and taken substantially on the line 6-6 of Figure 4.

Figure 7 is an elevational view of the inner member of the ratchet wrench.

Figure 8 is a section on the line 8-8 of Figure 1.

In these views the numeral I indicates the polish rod which is connected with the pump rod of a well and the numeral 2 indicates the two parallel parts of a cable that hang over the horse head of a pumping jack and in carrying out the invention I provide a two-part clamp A, composed of the wide front part 3 and the narrow rear part 4, the two parts being connected together in clamping relation on the upper part of the rod I by the U-bolts 5. A top bar 6 is held to the upper portion of the front of the clamp by the top U- bolt as shown more particularly in Figure 3 and this bar extends beyond the parts 2 of the cable to prevent rotary movement of the parts. A screw shaft 1 is placed over the rod I and has its upper end held in the clamp A and thus this screw shaft is held against turning movement. A nut memher 8 is threaded on the screw shaft and anti-friction bearings 9 are placed between the lower end of the enlarged part of the nut and the lower bar I0 which is supported by the ends of the parts 2 Y of the cable. The member ill has a centrally arranged hole therein through which passes the screw shaft and the upper end of the hole is countersunk'to receive the reduced lower end of the nut. An opening I I is formed in the front of this member In and extends from the hole through the front thereof for facilitating passage of the rod I into the opening and from the openin and a block I2 closes the opening II and is held in place by a plate I3 bolted to the front of the member II] and to the block as shown in Figure 5. The upper part of the nut is reduced and is of non-circular shape in cross section as shown at I3 and the inner rotary part I of a wrench having a non-circular opening therein is adapted. to be placed on this part I3 of the nut. This member I4 is provided with the notches I5 and it has an annular groove I6 in its upper portion. The head I! of the wrench fits over the member I4 and has a pin I8 therein for engaging the groove I6 and a spring-pressed dog I9 is carried by the head for engaging the notches I5 so that the member I4 can be given a step by step rotary movement by the oscillatory movement of the head by means of the handle 20. A two part clamp ZI is clamped to the rod I and the lower end of the screw shaft rests against the same and a nut 22 is threaded on the lower part of the screw shaft for engaging the lower part of the member ID, this nut being moved upwardly against the member If] when the well is in normal operation and keeps the parts in position to prevent wearing of the threads of the nut 8.

If desired the anti-friction bearings 9 can be eliminated and an ordinary wrench can be used instead of the ratchet wrench shown in the drawings.

If foreign matter, such as rubber, mud, lime, stone stop operation of the pump, the nut 8 is moved upwardly on the screw shaft 1 so that the rod I with the screw shaft can move downwardly and then during the pumping operation the valves will be jarred so that this foreign matter will be loosened and will pass from the well during the pumping operation. ,Then the nut 8 is moved downwardly in the position shown in Figure 2. This operation can be performed while the pump is in operation and without loosening any bolts or the like. Also, when one rod is to be removed or detached from another the handle of the wrench can be placed against a part of the derrick so as to prevent backlash when another wrench is being used to loosen or tighten a lower rod section. This will prevent injury to the workman.

The screw shaft 1 has flattened side parts at its end fitting in a recess in the clamp A, the wall of the recess having flattened part for engaging the flattened parts of the shaft so that the shaft is held against turning movement by the clamp but this clamp does not, clamp firmly on the screw shaft.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended claims.

Having described the claimed as new is:

1. In a well pumping apparatus including a cable having parallel limbs and a cross bar supported at the lower ends of the limbs and a polish rod, a screw shaft, clamps for holding the invention,

what is same against turning movement on the rod and against longitudinal movement on the rod, a nut threaded on the screw shaft, anti-friction means between the nut and the bar, said nut, adapted to be raised to permit lowering of the rods, one of said clamps comprising a bar extending across said limbs to abut the same and block turning of said screw shaft.

4 2. In a well pumping apparatus including a cable having parallel limbs, a polish rod and a bar supported by the lower ends of the limbs and having a hole for the passage of the rod, a screw shaft on the rod passing through the hole in the bar, upper and lower clamps on the rod engaging the ends of the screw shaft, a second bar supported from the upper clamp and extending beyond the ends of the limbs of the cable, a nut on the screw shaft, anti-friction means between the nut and the first bar, a wrench for moving the nut on the screw shaft and a nut threaded on the screw shaft for engaging the bottom of the first bar when the parts are in normal position.

J AMES R. COLLINS. 

